Ga. Melkov et al., Parametric interaction of a spin wave pulse with localized non-stationary pumping: Amplification and phase conjugation, IEEE MAGNET, 35(5), 1999, pp. 3157-3159
Parametric interaction of a dipolar spin wave pulse with electromagnetic fi
eld of a localized nonstationary (pulsed) pumping is studied experimentally
and theoretically in yttrium-iron garnet (YIG) films. This interaction lea
ds to the effective amplification of the incedent BVMSW pulse, and also to
the formation of a phase-conjugated and amplified pulse propagating in the
reverse direction. Numerical calculation of amplification and conjugation c
oefficients are in good quantitative agreement with experiment.